The safety of Tesla’s Model S has been given a vote of approval after America’s National Highway Traffic Safety Administration (NHTSA ) reaffirmed its five-star score. Reports of the electric car bursting into flames following impact have raised concerns on the model’s safety in recent months with three such incidents in the space of five weeks . However, the NHTSA – the US government body in charge of maintaining vehicle standards – has reiterated its five-star rating of the Model S overall and in all subcategories, the highest safety rating in America. The agency’s investigation into the recent fire incidents remain ongoing but the German Federal Motor Transport Authority, Kraftfahrt-Bundesamt (KBA), recently found no manufacturer-related defects or need for further action. The fires hit Tesla’s share price with a 6.2 per cent ($180.95) dip in October but Tesla has alway...